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3,896
RESULTS

Media Type
1
collections
3,891
texts
3
movies
1
data
Availability
3,896
Always Available
Year
164
1983
144
1982
46
1980
103
1979
159
1978
106
1977
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Topics & Subjects
3,890
bell system
3,487
system technical
649
technical journal
640
frequency
453
system
435
transmission
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Collection
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Creator
173
western electric co.
22
western electric co., inc.
5
american telephone & telegraph co.
4
bell telephone laboratories, inc.
4
pacific telephone & telegraph co.
2
bell telephone laboratories, incorporated
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Language
3,879
English
1
Interlingue
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